/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesCommon/Public/Online/LobbiesCommon.h
Try to rejoin previously joined lobbies.
virtual [TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FRestoreLobbies](API\Plugins\OnlineServicesInterface\Online\FRestoreLobbies) > RestoreLobbies ( [FRestoreLobbies::Params](API\Plugins\OnlineServicesInterface\Online\FRestoreLobbies\Params) && Params )